Emil b



(No Model.)

B. B. MEYROWITZ, BAR SPRING EYEGLASSES.

Patented Feb. 25,1896.

AN DREW B GRAHAMFHBTU-UKHQWASHINGTOND n 7 UNITED STATES 'ATENT OFFICE.

EMIL B. MEYROWVITZ, OF RIDGEFIELD, NEW JERSEY, ASSIGNOR TO THE MEYROWITZMANUFACTURING COMPANY, OF SAME PLACE.

BAR-SPRING EYEGLASSES.

SPECIFICATION forming part of Letters Patent No. 555,459, dated February25, 1896.

Application filed July 3, l8 95. erial No. 554,833. (No model.)

T0 on whom it may concern.-

Be it known that I, EMIL B. MEYROWITZ, a citizen of the United States ofAmerica, and a resident of Ridgefield, in the State of New Jersey, haveinvented a new and useful Improvement in Bar-Spring Eyeglasses, of whichthe following is a specification.

The great fault of all bar-springs for eyeglasses so far in the marketis that they are not adjustable in the manner familiar to opticiansthatis to say, the springs cannot readily be bent by means of pliers likethe ordinary springs of eyeglasses; and the main object of the presentinvention is to provide a bar-spring device which can be adjusted withthe same readiness as ordinary springs bya simple bending of the springor springs proper with pliers, either curling the same tighter orspreading and thus relaxing them. To this end springs proper of suitableforms are applied externally to lens-controlling arms.

Another object of the invention is to locate the pressure of suchsprings proper as low down as practicable, which tends to render thesliding movement smooth by avoiding undue frictional resistance at therectilinear bar or bars.

Another object is to fasten in and secure against accidentaldisplacement the lower ends of such externallyapplied springs proper.

The invention consists in certain novel combinations of partshereinafter-set forth and claimed.

A sheet of drawings accompanies this specification as part thereof.

Figure 1 of the drawings is a front view of bar-spring eyeglassesconstructed according to the present invention, with dotted outlinesshowing the laterally-moving parts as drawn apart for the application ofthe eyeglasses to the nose or their removal therefrom. Fig. 2 representsan enlarged cross-section on the line 2 2, Fig. 1. Fig. 3 representsperspective views of one of the springs proper, hereinafter described,and the coacting springsupport and bar-guide. Fig. 4 represents aperspective view of either of the lens-controlling arms with thebar towhich it is rigidly attached. Fig. 5 is an elevation of a modifiedbar-sprin g constituting another species of the invention. Fig. 6represents an enlarged cross-section on the line 6 6, Fig. 5. Fig. 7 isa face view, and Figs. 8 and 9 are a face view and an enlarged edgeview, illustrating additional modifications; and Figs. 10 and 11 are aface view and an enlarged edge view showing a last species of theinvention.

. Like letters and numbers refer to like parts in all the figures.

A pair of suitable lenses A B, with or without frames, are connectedwith each other through the medium of a bar-spring device constructed asfollows: A pair of suitable springs proper, which together may besubstantially similar in shape to an ordinary bowspring or may be formedby the respective ends of such a spring,as herein after described, areadapted to be tightened or relaxed by means of the pliers in likemanner, and are rigidly attached to a combined spring-support andbar-guide D. The latter, being preferably yoke-shaped, has dependingends 1 and 2 at its lateral extremities drilled to receive a pair ofstraight bars E E side by side, and a pair of lens-controlling arms F Fhaving upper ends 3 drilled and notched to receive the respective bars EE, are fastened rigidly on said bars respectively between said ends 1and 2 of the spring-support and bar-guide D, as in Figs. 1, 2, and 4,while the springs O, located externally withreference to the arms F Fpress inwardly against said arms to hold the eyeglasses upon the nose ofthe wearer, the lower ends or shanks 4, Fig. 4, of said arms F F beingrigidly connected to the respective lenses.

In the arrangement represented by Figs. 1 to 4, inclusive, the springs Gare attached to the spring-support and bar-guide D by three screws G,two of them inserted through holes -5, Fig. 3, inthe adjoining ends ofthe springs,

and the other between such ends. The other extremity of each spring isnotched and bent to form T-shaped ends 6, to which longitudinal slots 7in the arms F F are loosely fitted. These ends 0 are first inserted withthe springs substantially at right angles to their working position. Thesprings are then turned into place and attached by the screws G, whichlocks the ends 6 against withdrawal, while they are free to play in theslots.

The improved bar-spring device above described is shown in Figs. 1 and 2attached to rimless lenses A B, together with a pair of nose-guards II11 by means of what are known as slanting or tilting posts I 1constructed in accordance with my specification, forming part of UnitedStates Letters Patent No. 469,437, dated February 23, 1892, (claim 2,)for the purpose of tilting the springaway from the brows of the wearer,said lower ends or shanks 4:, Fig. 4, of the arms F F being perforatedto receive attaching-screws 8, Fig. 2, common to said arms F F andnose-guards II 11 and the latter, as shown in said Figs. 1 and 2, are ofthe construction set forth in my specification, forming part of LettersPatent No. 368,22 dated August 16, 1887, Fig. 7.

In the modified arrangement illustrated by Figs. 5 and 6 a bow springforming by its respective ends the pair of springs O is attached by apair of screws G to the top of a spring-support and bar-guide D, whichis or may be otherwise like the one above de scribed, the springs havingfree ends 9 and the arms F F front and rear flanges 10, between whichsaid free ends play without liability to slip foluvard or baclnvard oilthe same.

In the modified arrangement illustrated by Fig. 7 a bow-sprin g formingby its ends a pair of externally-applied springs O, as above, isattached coincidently with the arms F F and nose-guards II II to theposts I l of the lenses A 13 by the customary screws 8 above referredto. A single spring-attaching screw is shown at G, one being sufficientin this arrangement, and framed lenses are shown at A B by way ofillustration.

In the modified arrangement illustrated by Figs. 8 and 9 theexternally-applied springs G are formed of suitable wire and areconveniently lengthened by coils 11 at their upper ends, which aresecurely attached to the ends 1 and 2 of the spring-support and barguideD by solder joints, for example; Said ends 1 and 2 being convenientlyextended, the springs C are attached thereto below the rectilinear barsE E and the outer sides of the lens eontrollin g arms F F are providedwith longitudinal grooves 12, Fig. J, to coact with the free ends of thesprings C.

In the modified arrangement represented by Figs. 10 and 11 the pair ofsprings G and the spring-support and bar-guide D are made in one part,of suitable spring metal, and the bar'sprin g device is rendered tiltingby means of suitable bends 13, Fig. 11, in the lens-controlling arms FF.

Apart from any specific construction of the improved bar-spring device,the externallyapplied springs C are so exposed as to facilitateadjusting their tension, or, in other words, bending them as required toincrease or lessen their pressure by means of pliers. Their ends arelocated at or near the posts, so as to apply their pressure directly tothe noseguards, and at the same time such pressure, through the mediumof the rigid lens-controlling arms F F is substantially lengthwise ofthe bars E E and undue friction is thus prevented, while in eacharrangement the accidental displacement of the free ends of the springsis or may be effectively prevented.

A single bar with suitable appliances, as in said Patent No. 469,437,may in some cases be used to render the movement of the10DS-001ltrolling arms rectilinear. The nose-pieces, posts, and otherparts extraneous to the barspring device may be of any known or improvedmake suitable to be so used. Such externally-applied springs proper asthose shown in Figs. 1 to 4 may be attached below the bars, as in Figs.9 and 10. Any form of the improved bar-spring device may be renderedtilting, either in the manner illustrated by Fig. 2 or that illustratedby Fig. 11, and other like additional modifications will suggestthemselves to those skilled in the art.

Having thus described the said improvement, I claim as my invention anddesire to patent under this specification-- 1 A bar-sprin g device, foreyeglasses, comprising a pair of externally-applied springs, accessibleto tension-adjusting pliers, in combination with a pair oflens-controllin g arms pressed toward each other by said springs, andmeans for rendering the movement of said arms rectilinear.

2. The combination, in barspring eye glasses, of a pair of rigid armscoacting with the bar or bars at their upper ends, a combined bar-guideand spring-support, and external springs attached to the latter coactingwith said arms below the bar or bars, substantially as hereinbeforespecified.

3. The combination, in bar spring eyeglasses, of a pair of lenses, apairof downwardly-projecting nose-pieces, a pair of upwardly projecting armsrigidly connected with said lenses coincidently with said nosepieces,means for rendering the movement of said arms rectilinear, andexternally-applied springs pressing inwardly against said arms andadjustable by means of pliers, substantially as hereinbefore specified.

4. In a barspring device for eyeglasses, the combination of a pair oflens-controlling arms having longitudinal slots, rectilinear barscarried by the upper ends of said arms, a spring-support and bar-guide,and externally-applied springs, attached to said springsupport andbar-guide and having T-shaped ends which play in said slots,substantially as hereinbefore specified.

EMIL B. MEYROWITZ.

Witnesses:

J. J. ScHUeK, WM. A. MELIN.

